C.O.
Angela:
I would be totally upset that your dr didn't investigate more!!! I'd be looking for a new dr.
Check your bed again for bed bugs - they will leave SMALL dark spots on the corners and edges of your mattress. they USUALLY bite around the legs - but can get everywhere. If your husband has no bite marks on him - i would think it's not bed bugs..but then again - you NEVER know!!!
Go to a dermatologist and have them examine the rash.
You may have developed an allergy to something because of hormonal changes in your body from child birth (congratulations by the way!!)
Good luck!